Nonaqueous UFC suspensions, used as conductive additive in cathodes for lithium batteries
| Autor: | A. Trifonova, A. Momchilov, A. Kozawa, B. Banov, B Pourecheva |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Inorganic chemistry Pellets Energy Engineering and Power Technology chemistry.chemical_element Sintering Electrochemistry Cathode law.invention chemistry.chemical_compound Volume (thermodynamics) Chemical engineering chemistry Electrical resistivity and conductivity law Lithium Lithium oxide Electrical and Electronic Engineering Physical and Theoretical Chemistry |
| Zdroj: | Journal of Power Sources. :566-570 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/s0378-7753(99)00220-7 |
| Popis: | Three nonaqueous ultrafine carbon suspensions (UFC) were explored as conductive additives in LiMn2O4 cathodes for Li cell. The specific surface areas, pore volume distributions of the pure materials and of the cathode mixtures were measured. The results were compared with these obtained using TAB2 alone. A considerable decreasing of the specific resistivity and pore volume increasing of the UFC pellets after sintering was established. The electrochemical cycling test showed 5 to 10% higher discharge capacity of the cathodes containing 20% UFC+TAB2 at a ratio from 1:3 to 1:1, than that of the cathodes with only 20% TAB2. It is proposed the better results are due to the two physical chemical properties: pore volume and specific resistivity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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